| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/7/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 5/4/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 5/4/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 5/4/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/4/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 5/2/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 5/2/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 5/2/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/2/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/27/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/27/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 4/27/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/25/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/25/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 4/25/2012 |